Advanced Concepts: Content Delivery Networks (CDNs) / HTTP Pipelining / IPv4 vs IPv6 addressing scheme / IPv4 & IPv6 differences / Security Security Device Operations : Understanding of IDS/IPS technologies / Signature vs Anomaly based / HIDS vs NIDS / How Snort works / How IPS systems prevent attacks / Drop packets / TCP reset.Ability to read device logs: IDS/IPS Firewall Windows.Understand which device operates at which OSI layer: Hub Switch / Managed vs Unmanaged - Firewall - IDS/IPS.How to read packet headers - Know common packet header information for IP, TCP, UDP.Troubleshooting Methodology: Understanding of Network Address Translation (NAT) / Port Address Translation (PAT) / Understanding of Proxies / Overview of Virtual Private Networks (VPNs).Active vs Passive data transfer / SSH / SSH handshake / Telnet /Telnet Handshake / SMTP / SMTP handshake (Mail from/ RCPT ) / How attachments are handled Network.Understanding of major (everyday Layer 7) services/protocols: DNS DHCP HTTP HTTP Header Fields HTTP Status Codes - How HTTP maintains state - HTTPS vs HTTP / FTP.
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